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Securities - Securities Sold (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Debt Securities, Available-for-sale [Line Items] |  |  |
Carrying Value | $ 2,403 | $ 495,192 |
Net Proceeds | 2,387 | 495,340 | $ 4,028
Gain/(Loss) | (16) | 148 | 1,186
Carrying Value |  |  | 2,842
Net Proceeds |  |  | 4,028
Gain/(Loss) |  |  | 1,186
Obligations of other U.S. Government agencies and corporations |  |  |
Debt Securities, Available-for-sale [Line Items] |  |  |
Carrying Value |  | 11,088 |
Net Proceeds |  | 10,974 |
Gain/(Loss) |  | (114) |
Obligations of states and political subdivisions |  |  |
Debt Securities, Available-for-sale [Line Items] |  |  |
Carrying Value |  | 110,019 |
Net Proceeds |  | 112,199 |
Gain/(Loss) |  | 2,180 |
Trust preferred securities |  |  |
Debt Securities, Available-for-sale [Line Items] |  |  |
Carrying Value |  | 9,346 |
Net Proceeds |  | 9,403 |
Gain/(Loss) |  | 57 |
Other debt securities |  |  |
Debt Securities, Available-for-sale [Line Items] |  |  |
Carrying Value |  | 7,269 |
Net Proceeds |  | 7,395 |
Gain/(Loss) |  | 126 |
Other equity securities |  |  |
Debt Securities, Available-for-sale [Line Items] |  |  |
Carrying Value |  |  | 2,842
Net Proceeds |  |  | 4,028
Gain/(Loss) |  |  | $ 1,186
Obligations of states and political subdivisions |  |  |
Debt Securities, Available-for-sale [Line Items] |  |  |
Carrying Value | 901 |  |
Net Proceeds | 893 |  |
Gain/(Loss) | (8) |  |
Government agency mortgage backed securities | Residential mortgage backed securities |  |  |
Debt Securities, Available-for-sale [Line Items] |  |  |
Carrying Value | 943 | 264,924 |
Net Proceeds | 942 | 263,217 |
Gain/(Loss) | (1) | (1,707) |
Government agency mortgage backed securities | Commercial mortgage backed securities |  |  |
Debt Securities, Available-for-sale [Line Items] |  |  |
Carrying Value |  | 14,104 |
Net Proceeds |  | 14,082 |
Gain/(Loss) |  | (22) |
Government agency collateralized mortgage obligations | Residential mortgage backed securities |  |  |
Debt Securities, Available-for-sale [Line Items] |  |  |
Carrying Value | 559 | 72,153 |
Net Proceeds | 552 | 71,781 |
Gain/(Loss) | $ (7) | (372) |
Government agency collateralized mortgage obligations | Commercial mortgage backed securities |  |  |
Debt Securities, Available-for-sale [Line Items] |  |  |
Carrying Value |  | 6,289 |
Net Proceeds |  | 6,289 |
Gain/(Loss) |  | $ 0 |

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- Definition This item represents the difference between the gross realized gains and losses realized on the sale of debt or equity securities categorized neither as held-to-maturity nor trading securities. Additionally, this item would include any losses recognized for other than temporary impairments (OTTI) of the subject investments in debt and equity securities. + References No definition available. + Details
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